HTPB推进剂储存老化性能试验研究

Test study on storage aging properties of HTPB propellants

为了准确获得长期储存的HTPB复合固体推进剂药柱老化情况,分析总结推进剂老化规律,进而准确预估出药柱使用寿命,通过自然存储试验方法,测定了长期储存的HTPB推进剂在不同储存阶段的密度、燃速和不同温度下的力学性能数据。研究发现密度和燃速随储存时间几乎没有变化;而不同温度下的抗拉强度、伸长率数据随着推进剂在储存期间粘合剂的逐渐老化而有不同的变化趋势。

To get accurately the aging status of long-term stored HTPB composite solid propellants, analyze the aging rule and then forecast the life of propellants, the density, burning rate and mechanical properties at different temperatures of HTPB propellants at different storage times were tested using natural storage test method. The rules were found that the density and burning rate of HTPB propellants almost keep the same at different storage period, While the strain, stress value of HTPB propellants at different test temperatures have different change trends with the aging of polymer adhesive in storage.